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s. D. STROHM. METALLIC CIRCUIT POR ELECTRICAL CURRENTS. No. 267,278. Patented Nov. 7,1882.

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WJTNESSES: fNI/ENTOR N. PETERS. mummy-pw, wwmgim. u. c

UNITED STATES e PATENT OFFICE.

SAMUEL D. STROHM, OF PHILADELPHIA, PA., ASSIGNOR, BY MESNE ASSIGN- MENTS, OF ONE-THIRD TO EDVARD C. SNYDER, OF SAME PLAGE.

METALLIC CIRCUIT FOR ELECTRICAL CURRENTS.

SPECIFICATION forming part of Letters Patent No. 267,278, dated November '7, 1882.

Application tiled April 6, 1882. (No model.)

To all 'whom it may concern Be it known that I, SAMUEL D. S'rRoHM, a citizen ofthe United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Metallic (lircuits for Electrica-l Currents; and I do hereby declare the following to be a full, clear, and exact description ot' theinvention, reference be- 1o ing had to the accompanying` drawings, which form part of this specin'oation, in which- Figure l is a plan showing construction of wires before being interlockcd. Fig. '2 is a plan showing the wires looped or inter-locked.

Fig. 3 is a modification showing the corrugations in groups, the straight portions of the wires passing on alternate sides thereof.

My invention relates to conductors for electric currents, and has for its twofold object to maintain the Wires forming such circuits at a fixed relative distance for a part of their length by means of a fastening composed ot' `the wires themselves, and to prevent the ill effects of absolute'parallelism by causing the wires to cioss each other at short intervals.

My improvements consist in the peculiar construction and combination of parts, hereinafter set forth, comprising two wires arranged to run parallel for portions of their length, and

3o formed with corrugations or loops at short in.- tervals, which produce crosses and at the same time atford means for maintaining such wires in their fixed relative position. The wires so interlocked are intended to form the line-wire and return-circuit for a complete metallic circuit.

Referring to the accompanying drawings, A and B represent two conductors composed of insulated wires, and adapted and designed 4o to forni a metallic circuit. Each ofthe wires is straight in parts, such parts being indicated by the letters a and b, and each is formed at short intervals with corrugations or loops a b', as shown in Fig. l. The wires being thus tirsteonstructed are laid side by side, each one passing over or crossing the loops ot' the other. While thus located the tops ot' said loops are bent over the wires resting upon them, forniing short curves or f'astenings a2 b2, said curves trending in opposite directions alternately, so as to inclose the wires on two sides and prevent their'coming apart. The corrugations or loops, bent over as described, not only serve as fastenings to hold the wires at the proper reiative distance apart, but also canse such wires to cross upon one another, thus preventing injurious inductive eii'ects in the circuit, and avoiding the induction of a current in either from a neighboring conductor running in the same direction.

I am aware that it is not new to interlock conductors for theA purpose ot' preventing induction. Hence I do not broadly claim interloeked or intertwined conductors.

XVhat I claim as my invention is as follows:

l. A metallic circuit composed of the wires A B, straight for a part of their length, and having corrugations at intervals to form rests for the straight portions of other like wires, such straight parts of each wire being in the 7o same line, substantially as shown and described.

2. The combination of two wires,A B, forming a metallic circuit for electrical purposes, each ot' said wires having straight portions a 75 l) and corrugationsA or loops a b', said wires being combined and larranged, substantially as described, with their straight portions parallel, their corrugations forming crosses and affording means for keeping said wires in a xed relative position, as set forth.

In testimony thatIclaim the foregoing I have hereuntoset my handthisth dayot'April,1S82.

SAMUEL D. S'IIOII M.

Witnesses:

- ANDREW ZANE, Jr.,

M. D. GoNNoLLY. 

